Gabriel Caffese wrote:
>=20
> Hi,
>    I want to build a stand alone programmer, using a 16F628 for exa=
mple, for programming a 16F627 and a 12C671, and both images should b=
e inside the 16F628 who acts as a programmer.
>    So, before starting, I have a question:
>=20
>    Which difference is there in programming each one of these micro=
s, which have the same amount of program memory ?
>   Obviously I know about VPP on 12C671.
>   So, if I have the 2 images (they=B4re small) inside the 16F628, c=
ould I program both using exacly the same algorithm ?
>   And what about 16F84 ? Is it the same, too ?
>=20
>  Thanks to everyone !!
>       Gabriel.-


You can use pretty much the same programming instruction set on both
chips. The main difference is that you need to specify a "stop
programming" on the 12C671 chip after 100uS and then do the 3 X over
programming cycles after verification.

You may need to bulk erase the 16F627's and add code to program the
EEPROM.

I have successfully programmed the 16F627/8 chips using a 16F84
algorithm in HV and LV modes. Just the memory size is different.

Check out the data sheets for more specific details.

--=20
Best regards

Tony

mICros
http://www.bubblesoftonline.com
mailto:sales@bubblesoftonline.com

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